WebCore/CollapsedBorderValue.h

   1 /*
   2  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
   3  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
   4  *           (C) 2000 Dirk Mueller (mueller@kde.org)
   5  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
   6  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Library General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Library General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Library General Public License
  19  * along with this library; see the file COPYING.LIB.  If not, write to
  20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21  * Boston, MA 02110-1301, USA.
  22  *
  23  */
  24
  25 #ifndef CollapsedBorderValue_h
  26 #define CollapsedBorderValue_h
  27
  28 #include "BorderValue.h"
  29
  30 namespace WebCore {
  31
  32 struct CollapsedBorderValue {
  33     CollapsedBorderValue()
  34         : border(0)
  35         , precedence(BOFF)
  36     {
  37     }
  38
  39     CollapsedBorderValue(const BorderValue* b, EBorderPrecedence p)
  40         : border(b)
  41         , precedence(p)
  42     {
  43     }
  44
  45     int width() const { return border && border->nonZero() ? border->width : 0; }
  46     EBorderStyle style() const { return border ? border->style() : BHIDDEN; }
  47     bool exists() const { return border; }
  48     Color color() const { return border ? border->color : Color(); }
  49     bool isTransparent() const { return border ? border->isTransparent() : true; }
  50
  51     bool operator==(const CollapsedBorderValue& o) const
  52     {
  53         if (!border)
  54             return !o.border;
  55         if (!o.border)
  56             return false;
  57         return *border == *o.border && precedence == o.precedence;
  58     }
  59
  60     const BorderValue* border;
  61     EBorderPrecedence precedence;
  62 };
  63
  64 } // namespace WebCore
  65
  66 #endif // CollapsedBorderValue_h